Concrete form



Sheets-Sheet 1 as Eg..

CONCRETE FORM F. o. HELTZEI.

Filed Dec. so, 1922 l a4 .Furie 10.1924.,

June 10, 1924. l,496,933

F. Q. HELTZEI.

CONCRETE FORM i Filed Dec. 30 1922 3 Sheets-Sheet. 2

60 l` c' fu m Iban `|j f' June 10, 1924s Y v F. o. HELTZEL CONCRETE FORM 3 S-heetvS-Sheet 5 Filed Dec.. 30 J; 1922 FIG.@.

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FRANCIS 0. HELTZEL, QF

EN, QHO.

CONCRETE F0.

Application filed December 3o, 1922. Serial No. ,854;

To all whom t may concern:

Be itknown that l, FRANCIS 0. HELTZEL, a citizen of United States, residing at Warren, in the county of Trumbull and State of Ohio, have invented certain new and useful Improvements in Concrete Forms, of which the following is a speciticatiomreference beingr had therein to. the accompanying drawing.

The present invention relates to'concrete forms, and more particularly to road forms ,using rails for defining the edges or sides p concrete roads, side walks, curbs, and the One of the objects of the invention is the novel assemblage of templates or division or spacer plates with the rails, in order to support such templates or plates between the rails and for hol-ding the rails in proper spaced relation.

Another object is the provision of a novel assemblage of spacer brackets or cross bars with the rails, for supporting and spacing one rail. such as the face rail of a curb form. from the opposite rail, such as the back rail of a curb form, there being means for detachably connecting the bracket or bar and one rail so that they can be quickly assembled and separated and the arrangement being such that when said bracket and rail are assembled. the structure Willbe rigid and substantial. I

A further object is the provision of flanged rails Whose flanges have slots so arranged or located as to accommodate the templates or division or spacer plates. and the spacer brackets or bars at the predetermined spaced intervals.

The invention also has` for an object to simplify the construction of theforms, and to enable the different styles and sizes o forms to beconveniently set or built up from the rails, for diii'erent conditions and various kinds of work.

With the foregoing and other objects in view., which will be apparent as the description proceeds, the invention resides in the construction and arrangement of parts, as hereinafter described and claimed. itbeing understood that changes can be made Within the scope of what is claimed, Without departing from .the spirit of the invention.

The vinvention is illustrated in the accompanying drawings, Wherein- Figure 1 is a perspective view of a curb form incorporating the' improvements.

Fig. 2 is a plan view of the curb form showing a full rail length and the joints at the ends thereof.

Fig. 3 is a cross section of the curb form adjacent to one of the division or spacer plates and also through thelatches.

Fig. 4 is a plan vieW of one of thelatclles of the rail ljoints showingthe adjacent por` tions in horizontal section. ;v

Fig. 5 is a cross section of a built up curb form.

Fig. 6 is a perspective view of an integral curb and base form.

Fig. 7 is a vertical cross section of the form shown in Fig. 6 through one of the spacer brackets.

Fig. 8 is a cross section of a combined or integral curb and gutter form.`

Fig. 9 is a cross section of another integral curb and base form.

Fig. 10 is a cross section of still another 'integral curb and base form of built up construction.

Fig. 11 is a cross section of a shallow integral curb and base form.

Fig; 12 is a perspective view of one of the spacer bracket clamping bolts.

Rails of different heights are used insetting or building up the different forms, and although the forms are referredvto as being used in the construction of roads, they can be used in the construction of sidewalks and other concrete or plastic surfaces with equal propriety. The rails are of sheet metal or rolled' stock, and are preferably supplied in standard lengths (ten feet lengths in practice). Several di'erent forms are shown and described which are typical of the forms necessary for diierent requirements in the construction of concrete curbs, combined curbs and bases, curbs and gutters, and the like, and the improvements can be embodied in other forms within the range of this disclosure.

Referring particularly to Figs. 1, 2, 3 and 4, there is shown a curb form composed of 'another for stiening and strengthening the rails. l

The rails at each side of the form are disposedend to end in alinement, and the rails are connected Ain abutment by joints of the same kind as disclosed in my copending application Serial No. 543,868, led March 15, 1922, Thus, a longitudinally slidable latch 18 is provided at one end of each rail and is slidable in a U-shaped guide 19 having its ends or feet riveted, welded or otherwise secured to theweb 15 of the rail near the corresponding end thereof between the Hanges 16. The latch 18, in the present instance, is a solid casting, and bears against the web 15 at the outer side thereof, and said latch is slidable snugly in the guide 19. The end of the latch which is projected from the end of the corresponding rail has an outstanding lug 21, and the rear end of the latch has an outwardly extending sto lug 26 to limit the projection of the latch y contact with the guide 19, the lug 21 also contacting with the guide 19 when the latch is retracted to limit such retraction of the latch.

The other end portion of each rail is provided with a latch socket or keeper for the reception of the latch of the companion rail. Thus, the U-shaped socket member or keeper 20 has its ends or feet riveted, welded or otherwise secured to the web 15 of the rail, similar to the guide 19, adjacent to the cor'- responding end of the rail, and such socket member 21 is of a size to snugly receive the projected end of the latch of the adjacent rail when the latch is projected by sliding it into the socket or keeper. This provides av slip-joint connection between the rails, and when the rails are laid end to en'd, the latches arel readily projected into the sockets of the companion rails, to maintain the rail ends in alinement, and to support the rail ends against depression or relative lateral or vertical displacement.

The socket member 21 is provided in the arms thereof adjacent ,to the yoke or intermediate portion with upper and lower apertures 23 for receiving a stake 24, which is preferably of circular cross section as shown, and the lug 21 of the latch has a notch 22 to register with said apertures 23 for the engagement of said stake. The stake can be driven down through the socket member 20, which also'forms a stake socket, tor-'anchoring the rail ends in place on the ground. This stakealso forms a part of the joint for clamping the rail ends together. Thus, the stake in engaging in the notch 22 of the latch when the stake is driven down throuwh the socket member, will tightly draw t e latch into place in the socket member, thereby clamping the rail ends together tightly in abutment. As a result, the joint is made perfectly rigid and secure, and is also anchored to the ground by means of the stake. llt is preferable to have a set screw 25 in the yoke or intermediate portion of 'the socket member to bear against thestake and clamp the parts together against accidental loosening or separation. llt is therefore apparent aeeaeee that when the rails are laid end to end, the latches can be conveniently projected into the latch sockets, and the stakes 2t then driven down' through the members 21 tor making the joints rigid and anchoring them to the ground. Tn taking the rails u the set screws 25 are loosened and the sta es 24: withdrawn, which permits the latches to be retracted and the rails then removed laterally from place. The rails 14: being ofconsiderable height are shown as provided with a pair of latches at one end and a pair of socket members at the other end, although the rails hereinafter referred to, which are of less height, only have single latches.

Plates 27 are disposed between the parallel rails at longitudinally spaced intervals and provide templates or spacer plates for defining the width of the curb, as well as dividing the curb into sections or lengths for expansion and contraction of the sections without breaking or disrupting the curb. These division plates or templates 27 may be oi suitable width, according .to the width of the curb desired, to space the parallelrails apart, the vertical side edges of the plates abutting the webs 15 of the rails, and said plates may extend completely to the lower edges of the rails if a complete dvision of the curbis wanted.-A Each plate 2T is provided at its upper edge with lateral extensions 28 projecting in opposite directions and forming a T-head for the plate, said extensions 28 being seatable on the upper flanges of the rails. The extensions 28 have depending lugs -29 disposed transversely of the rails, to project 'down through slots 30 with which the rail flanges are provided. The extensions 28 also have apertures 31 for the engagement of the points or ends of pick heads or other implements for prying or lifting the plates out after the curb has been lnolded and finished. T he plates 27 space the rails apart the desired distance, and the lugs 29 engaging down through the slots in the upper flanges of the rails, will prevent the rails from spreading, thereby providing a substantialform.

The slots 30 are disposed transversely of the rail flanges and are spaced from the webs 15 and from the opposite edges ot the Hanges, so as not to weaken the rails.

These slots are provided in the `rail flanges.

at longitudinally spaced intervals according to a desired unit 'of i measurement. As shown, with rails of ten feet length, the slots are spaced one foot apart, with the slots nearest the endsl of the rails spaced six inches from the rail ends, so that the spacing is maintained from one rail to the next. as seen in Fig. 2, with the rail joints located between the corresponding slots 30. The templates or division plates can thus be inserted between the rails at the desired Leashes :rail at the top, the flanges 16 being of equal width and both flanges of eachrail being provided witL the slots 30.- rll`he slots 30A are also of advantage, as will hereinafter more fully appear. for the attachment to the rails of spacer brackets or bars.

4Fig. shows a curb form whose sides are built up by the use of superposed rails, illustrating how forms of different heights can be provided by using superposed rails. .its shown', the sides of the form comprise the base rails 32 and the extension rails 33 and 34 superposed one on the other, such rails being of three different heights. Each rail has the web 35, the outturned bast` flange 36, the outturned tread flange 37 and the lip or auxiliary flange 38 depending from the edge of the tread flange 37, the base flange 36 being wider than the tread flange 37. Such tread flanges 37 of the rails 32, 33 and 34 correspond with the flanges 16 of the rails 14 above described. The base flanges 36 of the upper rails seat on the tread flanges of the rails underneath, with the webs 35 of the two sets of rails flush to form theopposite walls or sides of the form. The rails 32 and 33 each have a latch 13 at one end, and each rail 34 has a latch 18 of smaller cross-section, such rail 34 being of small height, and the guide 19 of the latch is also smaller, being of angular shape between the base Harige 36 and web 35 of the rail 34, as seen in Fig. 5. The templates or division plates 27 are disposed between the parallel rails in the same manner as shown in 'Fig 3, and the lugs 29 of said plates engage down through the slots 30 in the tread flanges 37 of the uppermost rails 34. The tread flanges 37 of the rails 32, 33 and 34 are all provided with the slots 30', spaced and arranged according to the slots 30 of the rails 14. The base flanges 36 are also preferably provided with the slots 30at the saine spaced intervals and spaced'from the webs of the rails.

When using the superposed rails they are secured together. Thus, the flanges* of the rails are provided at short distances from the ends of the rails with'the apertures 33 provided with such apertures 39and 40 so that therails 14 inayalso be used with other rails above or below same.

Figs. 6 and 7 show the improvements as used in a form for molding an integral curb and base, such as when the road is formed with a concrete base having integral curbs, for receiving a composition, brick orother surface on the base between the curbs., as well known. The integral base and curb form uses the rails 14 as the outer sidewall or back of the form. and the rails 33 as the inner side wall or face rails. the back and face rails being secured together end to end,

lbetween the rails 14 and 33 and have their lugs 29 inserted downward through the slots 30 at the desired spaced intervals7 and said plates 27 may be of suitable depth for dividing the curb down as far as desired.. As shown, the plates 27" extend down to the base flanges 36 of the rails 33.

This modification also shows the use of the spacer brackets or bars 42 for supporting the face rails 33 from the back rails 14, it being noted that saidface rails 33 are spaced above the ground or road bed. These brackets or bars 42 are disposed at suitable longitudinally spaced intervals. and extend transversely across the upper flanges of the rails.E each bracket being provided at one edge thereof with an upturned flange 43, that stiffens and strengthens the bracket. A bolt 44 inserted downwardly through an aperture near one end of the bracket engages through the corresponding slot 30 of the flange 37 of the rail'33. for clamping said flange and brackettightly together, to sus: pend the rail 33 from the bracket. rIhe bracket 42 extends across the upper flanges of both rails, and is provided at that end opposite to the bolt 44 with a downturned abutment portion 45 to snugly abut the lip wall rail 14. An L-shaped clamping bolt 46 engages through an aperture in the bracket 42 near the end having the downturned portion 45, and a nut 47 is threaded on said bolt to seat down on the bracket, and has a handle 48 for conveniently turning said nut without the need of a wrenchf The bolt 46 is provided at its lower end with the angularly extending head or hook 49, and the shank of the bolt has flat sides 50 immediately above the head or hook 49.

By the provision of the clamping bolt 46 carried by the bracket 42, the .downturned abutment portion 45 of.Z the bracket., and the slots 30 in the rails, the bracket can be fas tened to the railin an eective and substantial manner, the construction being simple and the 'attachment and preparation of the parts being conveniently accomplished, with the use of but a single securing-or clamping element between the bracket 42 and each rail.

'llo fasten the. bracket 42 to the rail 14, in building up the form, the. nut 47 is loosened to permit the bolt. 46 to project downwardly from the bracket 42, so that they hook 49 can be inserted downwardly .through the corresponding slot in the upper lange 16, with the hook extending outwardly or away from the web of the rail. rll`his is done with the bracket 42 shifted inwardly, with the portion 45 above the flange 16 to enable the hook 49 to pass down through the slot 30. The bracket and bolt are then shifted outwardly transversely of the rail, to bring the hook 49 under the ange 16 beyond the outer end of the slot 30, as seen in Fig. 7, with the hook projecting close 'to the lip 17, and the bracket 42 is then brought down on the flange 16 with the portion 45 abutting the lip 17 or edge of the flange 16. The nut 47 is then tightened, clamping the 'bracket 42 slightly on the ange 16. The bolt 46 abuts the outer end of the slot.30, while the portion 45 Iof the bracket abuts the edge of the lange 16, thereby securely locking the bracket 42 on the rail 14 against transverse displacement on said rail, and the bracket l is also prevented from turning around ,the

bolt 46 by the contact of the abutment portion 45 with the flange 16. The face rail 33 can then be bolted to the bracket after being (properly spaced from the rail 14 by the ivision or spacer plates 27 The Hat sides 50 of the bolt 46 abut or lit the sides of the slot 30 to prevent the bolt 46 from turning, and to keep the hook 49 in'outwardly projecting position. The bracket 42 and rail 1,4 are thus locked together in an eiicient manner to support the bracket from the back rail 14 without danger of the brackets collapsing. The slots 30 of the rails thereforemot only accommodate the templates or division plates, but also accommodate the spacer brackets 42, for the reception and engagement of ,the bolts 46, it being noted that when the bolts 46 are tightened, the abut' ment portion 45 will prevent the longitudinal movement of the bracket 42 transversely of the rail 14, whichuis necessary to shift the bolt 46 so that the hook or head 49 can pass up through the slot 30.

Fig. 8 illustrates the improvements as used in a form for molding an inte ral or combined curb and gutter. "Thus, t e rail 14 provides the back rail or outer wall, a rail 321' provides the inner wall, and an intermediate rail 32|provides the face rail for the curb. rlFhe lower llange of the rail 14 and base flange 36 of the rail 32 are in the same horizontal plane to dene|the base of the combined curband gutter; the upper lan e 16 oit the rail 14 and tread ange 37 of t e rail 32 are in ,the saine horizontal plane to denne the top of the curb; the rails incassa 32 and 32 are spaced-the desired distances from the rail 14.to define the widths of the curb and gutter, respectively; the rail 32 32' delines the height o1' thickness of the gutter, the lower surface of the base flange 36 of the railg32 and upper surface of the tread ange 37 of the rail 32 being tlush to define the surface of the gutter. rlt`l1e rails of the several sets are secured together by the latches 18, and the face rails 32 are supported by the brackets 42 similar. to but shorter than the brackets42 above described. Curb and gutter templates or division plates 270 are disposed between the rails, being of angular or L-shape. Thus, the teinplate 270 has the lower horizontal portion 52 etween the rails 14 and 32 under the rail 32, with the base lange 36 of the rail 32 seating on the upper horizontal edge of the portion 52, and the template 270 has the upstanding vertical portion 53 between the rails 14 and 32 and spacing them apart, with the rail 32 fitting in the corner or angle between the portions 52 and 53. The upper end oit' the portion 53 has an eXtension 28 to project over and seat on the upper Harige 16 of the rail 14, and the portion 52 is provided at the inner upper corner thereof with an extension 28 to project over and seat on the tread flange 37 of the rail 32', and said extensions 28' and 28 have the depending lugs 29 to engage down through the slots in the rails '14 and 32.

Fig. 9 shows another integral curb and base form, using the back-rail 14, as in Figs. 6 and 7 but the division plates 27 are'of a dil'erent size than in Figs. 6 and 7. The face rail 54 has the web 55 and a lower flange 56, with a curved bend 57 between said web and flange, to form a fillet between the surface of the base and the face of the curb. rl`he rail 54 has an upper flange 58 provided with the slots 30, the lugs of the division plates being inserted downwardly through the slots in the upper flanges ot' the rails as in the other forms. The flange 58 has the depending lip or auxiliary tlange 59.

The curb face rail 54 is suspended from the spacer bracket or bar 42 which is fastened on the rail 14 by means of the bolt 46 as hereinbefore described, and the Harige 58 of the rail 54 is secured to the bracket 4 by means of the bolt 44. rlibe bracket 4 has a depending arm 60, forming the abutment portion to abut the lip 59 and edge of the flange 58, and extending downwardl transversely across the web 55 or the rall 54, the flange 43'l of the' bracket 42 also extending along the arm 60 to brace or stiften said arm. An abutment plate 61 is riveted, welded or otherwise secured to the flange 43 near the end of the arm 60 and projects from said arm at an angle to abut the web 55, so as to hold the rail 54 in place tenaces against spreading or separating movement the back rail and rail 34 for the face rail,l

with the division plates 27z .and spacer brackets 42 between the rails. Various other forms can be built or set up from the rails of different heights, for various kinds of work, and it will be noted that in the diderent set-ups vthe slots 30 in the upper flanges are arranged to receive the lugs 29 of the templates or division plates as well as the clamping bolts of the spacer brackets.

Havin thus described the invention, what is claime as new is y l. A concrete form rail having upper-land lower flanges each provided with transverse slots at equally spaced intervals.

2. A concrete form rail having upper and lower anges each provided with transverse slots at equally spaced intervals, and spaced from the web of the rail and the edges of said flanges. K 1

3. A concrete form comprising parallel rails', vone rail having an upper llange, a spacer bracket bearing on said dange, the other rail being secured to and suspended from said bracket, said flange havin a Slot, ,and a bolt engaging through said racket and enga cable down through said slot and having a ead to engage under said ange.

4. A concrete form comprising parallel rails, one rail having an upper flange,- a spacer bracket bearing on said flange, the other rail being secured to and suspended from said bracket, said dange having a slot, and a bolt engaging through said bracket and engageable down through ysaid slot and having a hook to engagey under said flange by the shifting movement of said bracket on said ange, said bracket andllange having portions to engage when the bolt is tightenedl lfor preventing the vshifting of the ,bracket on said lian e for the disengagement of said hook from t e flange.

5. A concrete form comprising Aparallel ack or outer rails, one rail having an upper Harige pro vided with a transverse slotga spacer bracket bearing on said flange, the other rail-being secured to and supported from said bracket, a clamping bolt extending through said bracket and having al hook at its lower end to engage down through said slot and then engage under said flange by the shifting movement of the bracket on said flange, and

a nut threaded :on said bolt to bear on the bracket. l

' `6. A concrete form comprising parallel rails, one rail having an upper flange provided With a transverse slot, a spacer bracket bearing on saidflange, the other rail being secured to and supported from said bracket, a clampin bolt extending through said bracket an having a hook at its lower end to engage downthrough said slot and then Aengage under said flange by the shiftin movement of lthe bracket ori said flange, an a nut threaded on said bolt to bear on the bracket, said bracket and flange having portions to abut one another when said bolt-and nut are t1ghtened to prevent the bracket shifting on vsaid lange to disengage said` hook from the flange.

7. A concrete form comprising parallel .named rail to engage under .said'flange by the .outward shitting movement of the bracket with reference to saidflange, and

a nut threadedV on the bolt-to bear on .said

bracket for clamping the bracket von said .i

ff renners' o. naar L.'

ereunto ax my rails, one rail having an outturned flange 55 l provided with a Htransverse. slot, a spacer- 

